Below is a simplified example using Java Swing for the GUI and a simple data structure for storing runner information. Note that this is a basic mockup that I made but I still need to improve on. import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedWriter; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; public class RunnerGUI extends JFrame { private List runners = new ArrayList<>(); private JTextField nameField, distanceField, timeField; private DefaultListModel listModel; public RunnerGUI() { // Set up JFrame setTitle("Runner Information"); setSize(400, 300); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Create components nameField = new JTextField(20); distanceField = new JTextField(10); timeField = new JTextField(10); listModel = new DefaultListModel<>(); JList listView = new JList<>(listModel); JButton addButton = new JButton("Add Runner"); JButton sortButton = new JButton("Sort List"); JButton saveButton = new JButton("Save to CSV"); // Add components to the frame setLayout(new BorderLayout()); JPanel inputPanel = new JPanel(); inputPanel.add(new JLabel("Name:")); inputPanel.add(nameField); inputPanel.add(new JLabel("Distance:")); inputPanel.add(distanceField); inputPanel.add(new JLabel("Time:")); inputPanel.add(timeField); inputPanel.add(addButton); inputPanel.add(sortButton); inputPanel.add(saveButton); add(inputPanel, BorderLayout.NORTH); add(new JScrollPane(listView), BorderLayout.CENTER); // Add ActionListener for buttons addButton.addActionListener(new ActionListener() {  @Override public void actionPerformed(ActionEvent e) { addRunner(); } }); sortButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { sortList(); } }); saveButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { saveToCSV(); } }); } private void addRunner() { String name = nameField.getText(); double distance = Double.parseDouble(distanceField.getText()); double time = Double.parseDouble(timeField.getText()); double pace = time / distance; Runner runner = new Runner(name, distance, time, pace); runners.add(runner); updateListView(); clearFields(); } private void sortList() { // Implement sorting based on radio button selection // For simplicity, let's sort by name in ascending order Collections.sort(runners, Comparator.comparing(Runner::getName)); updateListView(); } private void saveToCSV() { try (BufferedWriter writer = new BufferedWriter(new FileWriter("finalProjectRunners.txt"))) { for (Runner runner : runners) { String line = String.format("%s,%.2f,%.2f,%.2f", runner.getName(), runner.getDistance(), runner.getTime(), runner.getPace()); writer.write(line); writer.newLine(); } JOptionPane.showMessageDialog(this, "Data saved to CSV file."); } catch (IOException e) { e.printStackTrace(); JOptionPane.showMessageDialog(this, "Error saving to CSV file."); } } private void updateListView() { listModel.clear(); for (Runner runner : runners) { String displayText = String.format("Name: %s, Distance: %.2f, Time: %.2f, Pace: %.2f", runner.getName(), runner.getDistance(), runner.getTime(), runner.getPace()); listModel.addElement(displayText); } } private void clearFields() { nameField.setText(""); distanceField.setText(""); timeField.setText(""); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new RunnerGUI().setVisible(true); } }); } } class Runner { private String name;

Below is a simplified example using Java Swing for the GUI and a simple data structure for storing runner information. Note that this is a basic mockup that I made but I still need to improve on.

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.List; public class RunnerGUI extends JFrame {

private List<Runner> runners = new ArrayList<>();

private JTextField nameField, distanceField, timeField;

private DefaultListModel<String> listModel;

public RunnerGUI() {

// Set up JFrame setTitle("Runner Information");

setSize(400, 300);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// Create components nameField = new JTextField(20);

distanceField = new JTextField(10);

timeField = new JTextField(10); listModel = new DefaultListModel<>();

JList<String> listView = new JList<>(listModel);

JButton addButton = new JButton("Add Runner");

JButton sortButton = new JButton("Sort List");

JButton saveButton = new JButton("Save to CSV");

// Add components to the frame setLayout(new BorderLayout());

JPanel inputPanel = new JPanel(); inputPanel.add(new JLabel("Name:"));

inputPanel.add(nameField);

inputPanel.add(new JLabel("Distance:"));

inputPanel.add(distanceField);

inputPanel.add(new JLabel("Time:"));

inputPanel.add(timeField);

inputPanel.add(addButton); inputPanel.add(sortButton);

inputPanel.add(saveButton);

add(inputPanel, BorderLayout.NORTH);

add(new JScrollPane(listView), BorderLayout.CENTER);

// Add ActionListener for buttons

addButton.addActionListener(new ActionListener() { 

@Override

public void actionPerformed(ActionEvent e) { addRunner();

}

});

sortButton.addActionListener(new ActionListener() {

@Override

public void actionPerformed(ActionEvent e) { sortList();

}

});

saveButton.addActionListener(new ActionListener()

{

@Override

public void actionPerformed(ActionEvent e)

{

saveToCSV();

}

});

}

private void addRunner()

{

String name = nameField.getText();

double distance = Double.parseDouble(distanceField.getText());

double time = Double.parseDouble(timeField.getText());

double pace = time / distance;

Runner runner = new Runner(name, distance, time, pace);

runners.add(runner);

updateListView();

clearFields(); }

private void sortList()

{

// Implement sorting based on radio button selection

// For simplicity, let's sort by name in ascending order Collections.sort(runners, Comparator.comparing(Runner::getName));

updateListView();

}

private void saveToCSV() { try (BufferedWriter writer = new BufferedWriter(new FileWriter("finalProjectRunners.txt")))

{

for (Runner runner : runners) { String line = String.format("%s,%.2f,%.2f,%.2f", runner.getName(), runner.getDistance(), runner.getTime(), runner.getPace());

writer.write(line);

writer.newLine(); } JOptionPane.showMessageDialog(this, "Data saved to CSV file."); } catch (IOException e) { e.printStackTrace(); JOptionPane.showMessageDialog(this, "Error saving to CSV file."); } } private void updateListView() { listModel.clear();

for (Runner runner : runners) { String displayText = String.format("Name: %s, Distance: %.2f, Time: %.2f, Pace: %.2f", runner.getName(), runner.getDistance(), runner.getTime(), runner.getPace()); listModel.addElement(displayText); } } private void clearFields() { nameField.setText(""); distanceField.setText(""); timeField.setText("");

}

public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new RunnerGUI().setVisible(true);

}

});

}

}

class Runner

{

private String name;

private double distance;

private double time;

private double pace; public Runner(String name, double distance, double time, double pace) { this.name = name; this.distance = distance;

this.time = time; this.pace = pace;

}

public String getName()

{

return name;

}

public double getDistance() {

return distance;

}

public double getTime() {

return time;

}

public double getPace() {

return pace;

}

}

With this code, can you please improve on it and see what can be fixed. Thank you!